CN101929455A - Electric air pump control method and system for vehicle - Google Patents
Electric air pump control method and system for vehicle Download PDFInfo
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- CN101929455A CN101929455A CN2010102595579A CN201010259557A CN101929455A CN 101929455 A CN101929455 A CN 101929455A CN 2010102595579 A CN2010102595579 A CN 2010102595579A CN 201010259557 A CN201010259557 A CN 201010259557A CN 101929455 A CN101929455 A CN 101929455A
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- air pump
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Abstract
The invention discloses an electric air pump control method for a vehicle and a control system adopting the method. The system comprises an air pump assembly, a pressure sensor and a time delay control device, wherein the time delay control device is connected with the pressure sensor and the air pump assembly through a wiring harness respectively, compares a pressure value P which is acquired in an air path by the pressure sensor with a set pressure value P0, and controls the operation of the air pump. The electric air pump control method comprises the following steps that: (1) when the pressure value P is smaller than the set pressure value P0, the time delay control device controls the air pump to start up; and (2) when the pressure value P is more than or equal to the set pressure value P0, the time delay control device stops the air pump after delayed time t. A pressure regulating valve and a pressure relay are not arranged in the traditional air path of the vehicle, the on/off and the water and sewage emission of the air pump are controlled by the time delay control device through a pressure sensor signal, and the method and the system have the advantages of simpleness and capacities of saving energy of the air pump, reducing the workload of the air pump and improving the working stability of a compressed air system.
Description
[technical field]
The present invention relates to a kind of controlling method of vehicle electric air pump.The invention still further relates to a kind of control system of vehicle electric air pump, this system comprises air pump assembly, condensation/exsiccator, pressure transducer and gas tank, air pump assembly comprises motor and driving mechanism, condensation/exsiccator comprises off-load/blowdown valve, and air pump is by the pipeline connection of condensation/exsiccator and gas tank.
[background technique]
At present, because the requirement of energy-saving and emission-reduction is more and more stricter, automobile energy-saving reduces discharging also increasingly stringent of standard.In order to reduce the energy consumption of vehicle, developed the numerous new vehicle system that comprises electric vehicle.And the main braking model of the braking system of motor vehicle braking system, especially large vehicle is the pneumatic brake of compressed air-driven, uses air pump as source of the gas, and gas cylinder is as energy storing device.Because pressurized air has big, energy-conservation, the free of contamination characteristic of power, also gradually by the vehicle other system as driving source, for example the height of vehicle suspension system is regulated, car door opens and closes or the like.Comprise the driving mechanism of the application of compressed air of braking system, on handling characteristics, all have the time discontinuous operation, work characteristics such as dutycycle is irregular as the energy.A large amount of now pressurized air air pumps that use are not do control, in order to guarantee the safe in utilization of vehicle, the air pump long-term work, unnecessary pressurized air is discharged by unloading valve, simultaneously the dirts such as water in the gas circuit are discharged outside the car with the off-load air, wasted big energy like this, also reduced the life-span of air pump and consumed lubricant oil.Current on some vehicles, especially begin to occur using electronic intermittently used air pump on the electric vehicle.The controlling method of air pump generally is to use the start and stop of pressure regulator valve and pressure relay control air pump, realizes air compressor in the range of working pressure of setting, the work of intermittence.But this method has increased pressure relay and two parts of pressure regulator valve on foot, and the dirts such as water in the gas circuit can not effectively be discharged simultaneously, cause often gas circuit stop up in addition under microthermal climate gas circuit by bursting by freezing.Simultaneously pressure regulator valve is mechanical parts with pressure relay, and regular meeting causes the air pump can't proper functioning because of influences such as vibrations, dust, muddy water in the time of in vehicle uses, and influences vehicle safety.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of method of utilizing the original compressed air system of vehicle to control the vehicle electric air pump.
Another technical problem that will solve of the present invention provides a kind of simple in structure and control the control system of vehicle electric air pump effectively.
For vehicle electric air pump controlling method of the present invention, above-mentioned technical problem is solved like this: comprise overrun control, with overrun control pressure transducer is gathered pressure value P and setup pressure value P in the gas circuit
0Compare the running of back control air pump, its step comprises:
(1) pressure value P is less than setup pressure value P
0The time, overrun control control air pump starts;
(2) pressure value P is more than or equal to setup pressure value P
0The time, delay controller stops air pump work after through delay duration t.
Preferably a kind of as vehicle electric air pump controlling method of the present invention, setup pressure value P
0Formula should satisfy condition: Pmax-Δ p 〉=P
0〉=Pmin+ Δ p; In the formula: Pmax is the unloading valve blow off pressure, and Pmin is for guaranteeing the normal pressure minimum that uses of vehicle, and Δ p is pressure transducer maximum error of measuring in Pmax arrives the scope of Pmin.
As the another kind of vehicle electric air pump controlling method of the present invention preferably, delay duration t greater than air pump in the system in normal working conditions pressure from P
0Rise to the time of Pmax.
Beneficial effect as vehicle electric air pump controlling method of the present invention is, in vehicle tradition gas circuit, utilize the start and stop and the draining blowdown of the baroceptor signal realization control air pump in the gas circuit by overrun control, method is easy, saves the energy that air pump consumes, and reduces the working load of air pump.
For vehicle electric air pump control system of the present invention, above-mentioned technical problem is solved like this: a kind of vehicle electric air pump control system, comprise air pump assembly, condensation/exsiccator, pressure transducer and gas tank, air pump assembly comprises motor and driving mechanism, condensation/exsiccator comprises off-load/blowdown valve, air pump is by the pipeline connection of condensation/exsiccator and gas tank, comprise overrun control, in the gas circuit that described pressure transducer is installed in gas tank is communicated with, overrun control is connected with air pump assembly with pressure transducer respectively by wire harness.
A kind of preferred as vehicle electric air pump control system, overrun control is to be integrated in the one section program that is used to control the air pump running on electric air pump or the vehicle in other control system.
Another kind as vehicle electric air pump control system is preferred, and pressure transducer is the analog or digital sensor with continuous output.
Another kind as vehicle electric air pump control system is preferred, and pressure transducer is the pressure switch of level pressure power.
Beneficial effect as this present invention vehicle electric air pump control system is, in vehicle tradition gas circuit, do not increase pressure regulator valve and pressure relay, utilize the start and stop and the draining blowdown of the baroceptor signal realization control air pump in the gas circuit by overrun control, simple in structure, improved the functional reliability of compressed air system.
[description of drawings]
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is vehicle electric air pump controlling method embodiment's 1 an of the present invention equipment connection diagram.
In Fig. 1, the 1st, off-load/blowdown valve, the 2nd, pressure transducer.
[embodiment]
As shown in Figure 1, the air pump control at certain pure electric coach is achieved in that
In the vehicle compressed air system, air pump joins by condensation/exsiccator and gas tank, and gas tank is connected with gas equipment again.Off-load/blowdown valve 1 is installed on condensation/exsiccator, in the gas circuit that pressure transducer 2 is contained in gas tank is communicated with, is used to detect the pressure change of gas tank.The type of pressure transducer 2 has adopted the analog or digital sensor with continuous output.
The power of air pump comes from electrokinetic cell, constitutes the electric air pump assembly by inverter, motor and air pump, two conditions of the need of work of this assembly: 1) connect 2 from the high-tension electricity of electrokinetic cell) receive working signal.Vehicle itself has the CAN bus control system, and a plurality of CAN modules are installed.
Overrun control is exactly to write one section air pump control program in the CAN module that has the output of vacant switching value therein, and this program can be according to pressure transducer 2 detected gas tank pressure signal P and setup pressure value P
0Compare, send working signal according to comparative result to the electric air pump assembly then, the operating condition of control air pump.This CAN module that writes the air pump control program as overrun control is connected with the electric air pump assembly with pressure transducer 2 respectively by the CAN bus.
One or more pressure transducers or pressure gauge are housed in the vehicle compressed air line, check the usefulness of air pressure for driver maintenance person.Present embodiment uses a pressure transducer or the measured current pressure value signal P of pressure gauge, also can gather force value signal that a plurality of pressure transducers or pressure gauge record and filter out current pressure value P according to certain standard.Overrun control will obtain pressure value P and the pressure value P of setting in advance the current gas circuit from pressure transducer
0Relatively come to determine the start and stop state of air pump 1: as P＜P
0, then air pump is opened; As P 〉=P
0The time, air pump cuts out after delaying time through t by overrun control.As observed pressure value P in the gas circuit during greater than Pmax (unloading valve blow off pressure), off-load/blowdown valve 1 begin to exit off-load and effluent.
As P＜P
0The time put high level at the switching value delivery outlet of setting, air pump starts running; As P 〉=P
0The time, through behind the delay duration t switching value delivery outlet of setting being put low level, air pump shuts down.Wherein, setup pressure value P
0Determine it is, its span formula that should meet the following conditions by the real vehicle data scaling:
Pmax-Δp≥P
0≥Pmin+Δp
In the formula: Pmax is the unloading valve blow off pressure
Pmin is for guaranteeing the normal pressure minimum that uses of vehicle
Δ p is that pressure transducer is measured maximum error of measuring in this pressure range
Requirement simultaneously, in delay duration t＞system air pump in normal working conditions pressure from P
0Rise to the time of Pmax.
Adopt the vehicle electric air pump control system of above-mentioned controlling method, need not to increase the purpose of using pressure regulator valve and pressure relay just can reach the start and stop of control air pump, system has simple in structure, and is easy to connect, reliable advantage.
Embodiment 2:
Pressure transducer 2 has adopted the pressure switch of level pressure power, is used for detecting the gas circuit variation in pressure and transmits a signal to overrun control.Other structures of present embodiment are identical with embodiment 1.
Claims (7)
1. vehicle electric air pump controlling method, comprise air pump, pressure transducer and condensation/exsiccator, described condensation/exsiccator comprises off-load/blowdown valve, it is characterized in that, comprise overrun control, described overrun control is gathered pressure value P and setup pressure value P in the gas circuit with pressure transducer
0Compare the running of back control air pump, its step comprises:
(1) pressure value P is less than setup pressure value P
0The time, overrun control control air pump starts;
(2) pressure value P is more than or equal to setup pressure value P
0The time, delay controller stops air pump work after through delay duration t.
2. a kind of vehicle electric air pump controlling method according to claim 1 is characterized in that described setup pressure value P
0Formula should satisfy condition: Pmax-Δ p 〉=P
0〉=Pmin+ Δ p; In the formula: Pmax is the unloading valve blow off pressure, and Pmin is for guaranteeing the normal pressure minimum that uses of vehicle, and Δ p is pressure transducer maximum error of measuring in Pmax arrives the scope of Pmin.
3. a kind of vehicle electric air pump controlling method according to claim 1 is characterized in that, described delay duration t greater than air pump in the system in normal working conditions pressure from P
0Rise to the time of Pmax.
4. vehicle electric air pump control system of using the described method of claim 1, comprise air pump assembly, condensation/exsiccator, pressure transducer and gas tank, described air pump assembly comprises motor and driving mechanism, described condensation/exsiccator comprises off-load/blowdown valve, described air pump is by the pipeline connection of condensation/exsiccator and gas tank, it is characterized in that, comprise overrun control, in the gas circuit that described pressure transducer is installed in gas tank is communicated with, overrun control is connected with air pump assembly with pressure transducer respectively by wire harness.
5. vehicle electric air pump control system as claimed in claim 4 is characterized in that, described overrun control is to be integrated in the one section program that is used to control the air pump running on electric air pump or the vehicle in other control system.
6. vehicle electric air pump control system as claimed in claim 4 is characterized in that, described pressure transducer is the analog or digital sensor with continuous output.
7. vehicle electric air pump control system as claimed in claim 4 is characterized in that described pressure transducer is the pressure switch of level pressure power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102595579A CN101929455A (en) | 2010-08-16 | 2010-08-16 | Electric air pump control method and system for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102595579A CN101929455A (en) | 2010-08-16 | 2010-08-16 | Electric air pump control method and system for vehicle |
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| CN101929455A true CN101929455A (en) | 2010-12-29 |
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ID=43368815
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102595579A Pending CN101929455A (en) | 2010-08-16 | 2010-08-16 | Electric air pump control method and system for vehicle |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600709A (en) * | 2013-11-21 | 2014-02-26 | 安徽安凯汽车股份有限公司 | Fuzzy control method of inflating pump for electric buses |
| CN103967766A (en) * | 2014-05-30 | 2014-08-06 | 衡阳合力工业车辆有限公司 | Method and device for controlling air compressor system of electric vehicle |
| CN104358680A (en) * | 2014-11-29 | 2015-02-18 | 中国重汽集团济南动力有限公司 | Air pump delaying control device |
| CN106150994A (en) * | 2016-06-30 | 2016-11-23 | 陈辉 | A kind of water pump control method and the use controller of the method, water pump |
| CN106194779A (en) * | 2016-07-30 | 2016-12-07 | 陈辉 | Water pump control method based on pressure transducer and controller |
| CN106696937A (en) * | 2016-12-16 | 2017-05-24 | 浙江吉利新能源商用车有限公司 | Air brake system and air compressor start and stop control method based on air brake system |
| CN107310544A (en) * | 2017-05-31 | 2017-11-03 | 瑞立集团瑞安汽车零部件有限公司 | A kind of condenser control device and its control method |
| CN107725306A (en) * | 2017-09-30 | 2018-02-23 | 东风汽车泵业有限公司 | A kind of engine hydraulic feedway |
| CN108119244A (en) * | 2018-02-11 | 2018-06-05 | 徐工集团工程机械股份有限公司科技分公司 | A kind of LNG loading machines delayed startup device and the loading machine using the device |
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| JPS6335837B2 (en) * | 1983-11-10 | 1988-07-18 | Nippon Air Brake Co | |
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| JPS6335837B2 (en) * | 1983-11-10 | 1988-07-18 | Nippon Air Brake Co | |
| DE10359739C5 (en) * | 2003-12-19 | 2009-09-10 | Man Nutzfahrzeuge Ag | Compressed air supply system and method for their operation |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600709A (en) * | 2013-11-21 | 2014-02-26 | 安徽安凯汽车股份有限公司 | Fuzzy control method of inflating pump for electric buses |
| CN103967766A (en) * | 2014-05-30 | 2014-08-06 | 衡阳合力工业车辆有限公司 | Method and device for controlling air compressor system of electric vehicle |
| CN103967766B (en) * | 2014-05-30 | 2016-05-04 | 衡阳合力工业车辆有限公司 | A kind of control method of electric vehicle air compression system and device |
| CN104358680A (en) * | 2014-11-29 | 2015-02-18 | 中国重汽集团济南动力有限公司 | Air pump delaying control device |
| CN106150994B (en) * | 2016-06-30 | 2017-12-01 | 陈辉 | A kind of water pump control method and controller, the water pump using this method |
| CN106150994A (en) * | 2016-06-30 | 2016-11-23 | 陈辉 | A kind of water pump control method and the use controller of the method, water pump |
| CN106194779A (en) * | 2016-07-30 | 2016-12-07 | 陈辉 | Water pump control method based on pressure transducer and controller |
| CN106696937A (en) * | 2016-12-16 | 2017-05-24 | 浙江吉利新能源商用车有限公司 | Air brake system and air compressor start and stop control method based on air brake system |
| CN106696937B (en) * | 2016-12-16 | 2020-09-08 | 浙江吉利新能源商用车有限公司 | Air pressure braking system and method for controlling starting and stopping of air compressor based on braking system |
| CN107310544A (en) * | 2017-05-31 | 2017-11-03 | 瑞立集团瑞安汽车零部件有限公司 | A kind of condenser control device and its control method |
| CN107725306A (en) * | 2017-09-30 | 2018-02-23 | 东风汽车泵业有限公司 | A kind of engine hydraulic feedway |
| CN107725306B (en) * | 2017-09-30 | 2024-03-22 | 东风汽车集团有限公司 | Hydraulic supply device for engine |
| CN108119244A (en) * | 2018-02-11 | 2018-06-05 | 徐工集团工程机械股份有限公司科技分公司 | A kind of LNG loading machines delayed startup device and the loading machine using the device |
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Application publication date: 20101229 |